html, body, div, span, applet, object, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-weight: normal;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section {
    display: block;
}

body {
    line-height: 1;
    font-family: Microsoft YaHei, sans-serif, Alibaba PuHuiTi-Medium, Alibaba PuHuiTi;
}

ol, ul, li {
    list-style: none;
    margin: 0;
    padding: 0;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

/**/
.class1 {
    border-bottom: 0 !important;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: black;
}

.screen-container-wrapper {
    flex-shrink: 0;
    width: 1920px;
    height: 1080px;
}

html, body {
    width: 100%;
    height: 100%;
}

body {
    overflow: hidden;
}

/*滚动条样式*/
::-webkit-scrollbar, ::-webkit-scrollbar {
    width: 5px; /*对垂直流动条有效*/
    height: 5px; /*对水平流动条有效*/
    border-radius: 7px;
}

/*定义滚动条的轨道颜色、内阴影及圆角*/
::-webkit-scrollbar-track, ::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, .3);
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 3px;
}

/*定义滑块颜色、内阴影及圆角*/
::-webkit-scrollbar-thumb, ::-webkit-scrollbar-thumb {
    border-radius: 7px;
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, .3);
    background-color: #5582e0;
}

em {
    font-weight: 600;
    font-style: normal;
}

.screen-pointer {
    cursor: pointer;
}

.clearfix:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: ".";
    clear: both;
    height: 0;
}

* html .clearfix {
    zoom: 1;
}

*:first-child + html .clearfix {
    zoom: 1;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.none {
    display: none;
}

.mr5 {
    margin-right: 5px;
}

.mr10 {
    margin-right: 10px;
}

.mr15 {
    margin-right: 15px;
}

.mb20 {
    margin-bottom: 20px;
}

.white {
    color: #fff !important;
}
